Back to skill

Security audit

Metabase

Security checks for vulnerabilities and agentic risk

Overview

The Metabase workflow includes approval safeguards, but missing software triggers instructions to run an unchecked remote installer without separate user approval.

Review and install a pinned, verified CLI release yourself before enabling this skill. Decide whether to allow the CLI's automatic skill synchronization; its documentation provides OO_SKILLS_SYNC_DISABLED=1 to disable it. Use a narrowly scoped Metabase API key, trust OOMOL with the connected account, and retain explicit approval for writes and SQL execution. The remote installer and hosted connector were not verified.

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Vulnerability Patterns
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Findings (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
97% confidence
Finding

The visible command executes an Oomol-hosted installer rather than interacting with Metabase. Nothing in the supplied chunk establishes that this installer is a supporting dependency for the declared functionality. The downloaded script's contents are unavailable, so its further behavior cannot be determined.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
99% confidence
Finding

Piping the remote installer directly into bash executes mutable network-delivered code without verifying its contents or authenticity beyond HTTPS. Although the domain is consistent with the documented CLI provider and execution is conditional on a missing dependency, a compromised distribution endpoint could run arbitrary commands with the invoking account's privileges.

Content

Scanner excerpt · SKILL.md (reported line 82)May include surrounding context.

First-time setup instructs the agent to execute remote installation scripts without a system-integrity warning.

Medium
Category
Output Handling
Confidence
96% confidence
Finding

The fallback instructs an agent to execute downloaded shell or PowerShell code without a separate approval step or integrity verification. A missing CLI can therefore turn an ordinary Metabase request into local code execution; compromise of the installer source could expose files and credentials accessible to the agent's OS account.

Content

No source excerpt is available for this finding.

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 103)May include surrounding context.

md
- **`OOMOL_INSUFFICIENT_CREDIT`** — OOMOL billing stop. Recharge at `https://console.oomol.com/billing/token-recharge` before retrying.

- **HTTP 402 without `OOMOL_INSUFFICIENT_CREDIT`** — the third-party account itself has no active plan or credit. Report the provider error message as is; do not ask the user to recharge OOMOL.

## Resources